Remember a few months ago when [artist id="450150"]Etta James[/artist] had some nice things to say about Beyoncé's portrayal of her in "Cadillac Records"? Well, apparently the good vibes have dissipated. James unleashed a verbal beat-down on B last week during a concert in which she, believe it or not, threatened to whip the "Single Ladies" singer's butt.

During the gig, she criticized the singer's performance at the inauguration. "You guys know your president, right? You know the one with the big ears?" began her rant, a recording of which was obtained by TMZ. "Wait a minute, he ain't my president. He might be yours; he ain't my president. But I tell you that woman he had singing for him, singing my song — she's going to get her a-- whipped.

"The great Beyoncé," James went on. "Like I said, she ain't mine. ... I can't stand Beyoncé. She has no business up there, singing up there on a big ol' president day, gonna be singing my song that I've been singing forever."

A review of the show in the Seattle Times noted James' reputation as a bawdy performer, adding that she made "lewd facial and hand gestures" during her opening song, "Come to Mama."

Beyoncé won critical acclaim for portraying James in "Cadillac Records," and has performed "At Last" several times since the movie was released, including in front of James, who has not made this kind of public fuss over it previously. A spokesperson for Beyoncé could not be reached for comment at press time. Beyoncé got in hot water with another icon last year at the Grammys, when soul legend Aretha Franklin ripped into B for introducing Tina Turner as "the queen," a title Franklin has claimed as her own.